我们从Python开源项目中，提取了以下6个代码示例，用于说明如何使用ctypes.wintypes.LPVOID。
def ReadFile(file, buffer, number_of_bytes_to_read, number_of_bytes_read, overlapped): """See: ReadFile function https://msdn.microsoft.com/en-us/library/windows/desktop/aa365467(v=vs.85).aspx """ ReadFile_Fn = windll.kernel32.ReadFile ReadFile_Fn.argtypes = [ wintypes.HANDLE, # _In_ HANDLE hFile, LPVOID, # _Out_ LPVOID lpBuffer, wintypes.DWORD, # _In_ DWORD nNumberOfBytesToRead, LPDWORD, # _Out_opt_ LPDWORD lpNumberOfBytesRead, LPOVERLAPPED # _Inout_opt_ LPOVERLAPPED lpOverlapped ] ReadFile_Fn.restype = wintypes.BOOL ret = wintypes.BOOL(ReadFile_Fn( file, buffer, number_of_bytes_to_read, number_of_bytes_read, overlapped ))
def send_ioctl(self, ioctl, inbuf, inbufsiz, outbuf, outbufsiz): """See: DeviceIoControl function http://msdn.microsoft.com/en-us/library/aa363216(v=vs.85).aspx """ DeviceIoControl_Fn = windll.kernel32.DeviceIoControl DeviceIoControl_Fn.argtypes = [ wintypes.HANDLE, # _In_ HANDLE hDevice wintypes.DWORD, # _In_ DWORD dwIoControlCode wintypes.LPVOID, # _In_opt_ LPVOID lpInBuffer wintypes.DWORD, # _In_ DWORD nInBufferSize wintypes.LPVOID, # _Out_opt_ LPVOID lpOutBuffer wintypes.DWORD, # _In_ DWORD nOutBufferSize LPDWORD, # _Out_opt_ LPDWORD lpBytesReturned LPOVERLAPPED] # _Inout_opt_ LPOVERLAPPED lpOverlapped DeviceIoControl_Fn.restype = wintypes.BOOL print ioctl # allocate a DWORD, and take its reference dwBytesReturned = wintypes.DWORD(0) lpBytesReturned = ctypes.byref(dwBytesReturned) status = DeviceIoControl_Fn(self.handle, ioctl, inbuf, inbufsiz, outbuf, outbufsiz, lpBytesReturned, None) return status, dwBytesReturned
def _link(src, dst, linktype=LINK_HARD): if linktype == LINK_HARD: if on_win: from ctypes import windll, wintypes CreateHardLink = windll.kernel32.CreateHardLinkW CreateHardLink.restype = wintypes.BOOL CreateHardLink.argtypes = [wintypes.LPCWSTR, wintypes.LPCWSTR, wintypes.LPVOID] if not CreateHardLink(dst, src, None): raise OSError('win32 hard link failed') else: os.link(src, dst) elif linktype == LINK_COPY: # copy relative symlinks as symlinks if islink(src) and not os.readlink(src).startswith(os.path.sep): os.symlink(os.readlink(src), dst) else: shutil.copy2(src, dst) else: raise Exception("Did not expect linktype=%r" % linktype)
def _set_internet_options(self, setting, on=True): """ Sets the internet options """ InternetSetOption = windll.wininet.InternetSetOptionW InternetSetOption.argtypes = [LPVOID, DWORD, LPVOID, DWORD] InternetSetOption.restype = BOOL List = INTERNET_PER_CONN_OPTION_LIST() Option = (INTERNET_PER_CONN_OPTION * 3)() nSize = c_ulong(sizeof(INTERNET_PER_CONN_OPTION_LIST)) Option[0].dwOption = self.INTERNET_PER_CONN_FLAGS Option[0].Value.dwValue = (2 if on else 1) Option[1].dwOption = self.INTERNET_PER_CONN_PROXY_SERVER Option[1].Value.pszValue = setting Option[2].dwOption = self.INTERNET_PER_CONN_PROXY_BYPASS Option[2].Value.pszValue = create_unicode_buffer('<-loopback>') List.dwSize = sizeof(INTERNET_PER_CONN_OPTION_LIST) List.pszConnection = None List.dwOptionCount = 3 List.dwOptionError = 0 List.pOptions = Option InternetSetOption(None, self.INTERNET_OPTION_PER_CONNECTION_OPTION, byref(List), nSize) InternetSetOption(None, self.INTERNET_OPTION_SETTINGS_CHANGED, None, 0) InternetSetOption(None, self.INTERNET_OPTION_REFRESH, None, 0) # pylint: disable=too-few-public-methods
def send_ioctl(self, ioctl, inbuf, inbufsiz, outbuf, outbufsiz): """See: DeviceIoControl function http://msdn.microsoft.com/en-us/library/aa363216(v=vs.85).aspx """ DeviceIoControl_Fn = windll.kernel32.DeviceIoControl DeviceIoControl_Fn.argtypes = [ wintypes.HANDLE, # _In_ HANDLE hDevice wintypes.DWORD, # _In_ DWORD dwIoControlCode wintypes.LPVOID, # _In_opt_ LPVOID lpInBuffer wintypes.DWORD, # _In_ DWORD nInBufferSize wintypes.LPVOID, # _Out_opt_ LPVOID lpOutBuffer wintypes.DWORD, # _In_ DWORD nOutBufferSize LPDWORD, # _Out_opt_ LPDWORD lpBytesReturned LPOVERLAPPED] # _Inout_opt_ LPOVERLAPPED lpOverlapped DeviceIoControl_Fn.restype = wintypes.BOOL # allocate a DWORD, and take its reference dwBytesReturned = wintypes.DWORD(0) lpBytesReturned = ctypes.byref(dwBytesReturned) status = DeviceIoControl_Fn(self.handle, ioctl, inbuf, inbufsiz, outbuf, outbufsiz, lpBytesReturned, None) return status, dwBytesReturned
def __init__(self, folder): self.folder = folder # Check the best way to do atomic file replacement. if sys.version_info >= (3, 3): self.replace = os.replace elif sys.platform == "win32": import ctypes from ctypes import wintypes ReplaceFile = ctypes.windll.kernel32.ReplaceFileW ReplaceFile.restype = wintypes.BOOL ReplaceFile.argtypes = [ wintypes.LPWSTR, wintypes.LPWSTR, wintypes.LPWSTR, wintypes.DWORD, wintypes.LPVOID, wintypes.LPVOID, ] def replace_windows(src, dst): if not ReplaceFile(dst, src, None, 0, 0, 0): os.rename(src, dst) self.replace = replace_windows else: # POSIX rename() is always atomic self.replace = os.rename
